<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>布局</title>
    <meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">
    <link rel="stylesheet" href="../command/bootstrap-4.3.1/css/bootstrap.min.css">
    <script src="../command/jquery/dist/jquery.min.js"></script>
    <script src="../command/bootstrap-4.3.1/js/bootstrap.min.js"></script>
    <script src="../command/bootstrap-4.3.1/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<h1>bootstrap简单入门</h1>
<div class="container-fluid"></div>
<h1>第一个bootstrap布局</h1>
<h2>以下内容为布局内容</h2>

<!--col-:所有的内容-->
<!--col-sm-:平板-->
<!--col-md-:电脑-->
<!--col-lg-:大屏-->
<!--col-xl-:超大屏-->

<div class="row">
    <div class="col-sm-3 col-md-3 col-lg-3">
        <p>我是占用3个栅格</p>
    </div>
    <div class="col-sm-9 col-md-9 col-lg-9">
        <p>我是占用9个栅格</p>
    </div>
</div>
<div class="row">
    <div class="row-md-5">
        <p>我是占用5个栅格</p>
    </div>
    <div class="col-md-5 offset-md-5">
        <p>我是占用5个栅格并设置偏移量为5个栅格</p>
    </div>
</div>
</body>
</html>